From 44056318fdd051e4ba3010fd6ddccfc33e122598 Mon Sep 17 00:00:00 2001
From: MichaelDvP <59284019+MichaelDvP@users.noreply.github.com>
Date: Sat, 4 Mar 2023 11:09:14 +0100
Subject: [PATCH] fix RC35Monitor active detection

editied direct on github, delete branch after merge.
---
 src/devices/thermostat.cpp | 11 ++++-------
 1 file changed, 4 insertions(+), 7 deletions(-)

diff --git a/src/devices/thermostat.cpp b/src/devices/thermostat.cpp
index 866ddb7f6..19f44fc69 100644
--- a/src/devices/thermostat.cpp
+++ b/src/devices/thermostat.cpp
@@ -1191,12 +1191,9 @@ void Thermostat::process_RC30Temp(std::shared_ptr<const Telegram> telegram) {
 // type 0x3E (HC1), 0x48 (HC2), 0x52 (HC3), 0x5C (HC4) - data from the RC35 thermostat (0x10) - 16 bytes
 void Thermostat::process_RC35Monitor(std::shared_ptr<const Telegram> telegram) {
     // Check if heatingciruit is active, see https://github.com/emsesp/EMS-ESP32/issues/786
-    // some RC30_N have only 13 byte, use byte 0 for active detection.
-    if (telegram->offset > 0 || telegram->message_data[0] == 0x00) {
-        return;
-    }
-
-    if (telegram->message_data[14] == 0x00) {
+    // roomtemp is measured value or 7D00 on active hc's, zero on inactive
+    uint16_t active = 0;
+    if (!telegram->read_value(active, 3)) {
         return;
     }
 
@@ -4288,4 +4285,4 @@ void Thermostat::register_device_values_hc(std::shared_ptr<Thermostat::HeatingCi
     }
 }
 
-} // namespace emsesp
\ No newline at end of file
+} // namespace emsesp